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Finding the Fourth Proportional to 101.61, 153.18 and 94.92

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Solution

The fourth proportional to 101.61, 153.18 and 94.92 is: 143.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.61 : 153.18 = 94.92 : x
  2. Step 2: Convert to fraction form
    101.61/153.18 = 94.92/x
  3. Step 3: Cross multiply
    101.61x = 153.18 × 94.92
  4. Step 4: Simplify right side
    101.61x = 14,538.84
  5. Step 5: Solve for x
    x = 14,538.84/101.61
  6. Step 6: Final answer
    x = 143.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.